<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>demo</title>
	</head>
	<body>
		<script type="text/javascript" >
			let arr = [6,7,8]
			const [a,,c] = arr

			console.log(a,c)
			
		</script>
	</body>
</html>